Experiments with controlled excitation of primary and secondary instabilities have been performed to study the process leading to the final breakdown of laminar swept wing flow . two types of high frequency secondary instabilities are identified 在人工激励激发基频与定常扰动条件下，施加高频人工激励，研究附面层流流动在高频二次不稳定性扰动的发生与增长过程。
